Tenon ing-machine



(No Model.)

L. P. PARKS.

TENONING MACHINE.

No. 415,394. Patented Nov. 19, 1889.

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iffasf N PETERS. Phuwumu m mr, Washington, D c.

UNITED STATES PATENT OFFICE.

LEW'IS F. PARKS, OF CINCINNATI, OHIO.

TE NONlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 415,394, dated November19, 1889.

Application filed March 16, 1888. Serial No. 267,306. (No model.)

To all whom it may concern:

Be it known that I, LEWIS F. PARKS, a citizen of the United States,residing at Cincinnati, Hamilton county, State of Ohio, have inventedcertain new and useful Improvements in lenoning-Machines, of which thefollowing is a specification.

This invention relates to improvements in such a tenoning-niachine as isshown in my United States patent of December 6, 1887, No. 374,425; andthey consist in the construction, novel arrangement, and combination ofcertain parts, which will be hereinafter fully described, and pointedout in the claims.

In the accompanying drawings, Figure 1 is a side View of my machine.Fig. 2 is a corresponding partial sectional side view. Fig. 3 is afragmentary front view, partly in section, on line 3 3 of Fig. 1. Fig. 4is a section on line 4 4 of Figs. 1 and 2. Fig. 5 is asection on line 55 of same figure. Fig. 6 is an under side view of washer 3 3. Fig. 7 isa front View of the top part of the tool without the bits. Fig. 8 is anend View of my gaging-frame. Fig. 9 is an enlarged fractional view ofthe top portion of the tool-holder.

15 15 are the legs, of which I have three, and to which the frame 16 issecured by bolts. The lower horizontal portion 17 forms the rest for thesliding bed-plate 18.

19 is a frame adjustably secured to frame 16, and having two bearings 2021, which hold and guide the reciprocating stock 22.

23 is the treadle, and 24 a rod connecting it with slide 25, a part ofwhich embraces the stock, while the other portion slides up and down ina slot in adjustable frame 19 correspondingly with the movements of thetreadle.

26 is a spring con fined between bearing 21 011 frame 19 and a collarand nut on the upper extremity of stock 22, for the purpose of liftingthe latter up again every time after being depressed by the action ofthe operator on the treadle.

18 is the sliding bed-plate, having guards 27 for the wood to restagainst and a nut 28 on its lower side, in which the screw-threadedshank 29 of hand-wheel 30 engages. This shank has two collars 31 31,which keep it from moving lengthwise without interfering with itsturning motion.

The iron portion of bed-plate 18 is dovetailed at 32 32 and slides onthe correspondingly-shaped rest 17 of frame 16. On one side of thebed-plate the dovetailed portion is not integral with it, but formed bya triangularshaped washer 33, held in place by a bolt 34. By tighteningthis bolt any wear or slack in the dovetailed portion of theconstruction may be taken up. To prevent any binding or uneven bearingof the washer, it is only supported on three points 60 6O 60.

The adj ustability of frame 19 enables the operator to bring the toolalways close down to the wood, which generally varies in thickness,thereby accommodating the length of the stroke always to the particularthickness of the work. To allow this adjustment to be more gradual andprevent the rather heavy frame 19, carrying the reciprocating parts,from dropping down suddenly when nut 38 on shank 39 is loosened, therear part of frame 16 has two inclined flanges 35 35 to both sides ofits central slot 36, against which washer 37 is held by a nut 38 011shank 39 of sliding frame 19.

The machine as described so far corresponds in general with the oneillustrated in my patent referred to above. The principal improvementsin this machine relate to the tool reversing and adjusting device, thecutting-tool holder, the treadle, the gaging-frame, and to devices totake up any wear and slack in the central slot of frame 19, and also inthe movable bed-plate 18. This latter device has already been described.The reversing device is principally needed when it is desirable to feedfrom either right or left, and consists in the handle 40, connected tothe stock 22, a collar 41, held in position on the stock by a set-screw,two stops 42 42 on said collar, and astop 43 on slide 25, against whicheither one of the stops 42 may abut. The distance between stops 42 42 isso regulated that by turning the stock by means of its handle as far asthe distance between the stops permits the tool' is completely reversedwhen the free stop abuts against stop 43. One of the stops 42 ispreferablyadjustable. About one-half of collar 41 is cut down from thetop, which cut-out forms two more abutments at its ends, against eitherone of which an extension 61 on the round portion of slide. is pressedby spring 26, serving as a lock 7 to keep either one or the other ofstops 42 .close to stop 43.

By loosening the set-screw in collar 41 stock 22 may be turned independently for the purpose of adjusting the tool-holder and tools.

The cutting-tool holder 47 is improved as follows: The wings 48 48 aremade longer and the shoulders 49 49 are put l0WQ1d0W11,Wl1lOl1arrangement allows a shorter cutting-tool to be used, whereby the moreexpensive steelis saved. The tool-holder is screwed against a shoulderon the stock. In order to shorten the stroke as much as possible, I usea series of sets of cutting-tools on the lengthened wings, by whicharrangement, each set cutting in the same time, a piece of wood maybeout about as many times as thick as the stroke of the stock multipliedby the number of series of sets of cutting-tools. On account of thelonger wings two scales have to be used for each set of cutting-tools.The latter are preferably securedto theholder byanut and bolt.

50 are grooves in the tool-holder, into which tongues 51 on thecutting-tools fit for the purpose of keeping the latter straight.

52 are set-screws by which the cutting-edge of the tools may be broughtmore or less forward as it wears off.

63 (see Fig. 9) are springs bolted into a recess on the tool-holderbackof the tools. They are bent forward toward the back of the tool, so thatthe shavings pass between them and v the tool, and are on the upstrokeof the latuntil they out against the clamps.

ter torn off the wood and taken away.

To keep the tool from vibrating, I continue the wings 48 48 and connectthem at the bottom, from whence another extension 74, passing through aslot in table 18, reaches down into a guide 53, connected to the frame.

The treadle 23 has two lugs 67 on its under side bearing against ahand-wheel 68 on rod 24, by which the height of the treadle maybechanged. The length of its leverage is also adjustable by means of a pin69 and holes in its rear end.

The wood 64, on which a tenon 70 has to be cut, is clamped into a gage54, having a stop 55 and the upright clamps 56, between which elementsthe length of the tenon is determined, the wood being fed toward thetools This gage is particularly useful when a great deal of work of thesame length has to be cut. The locking of the clamp is accomplished bythe swinging cam 57 being pressed against the inclined portion of theloose clamp and being held in such position by a set-screw in sleeve 58impinging on rod 59. The opening of the clamp is assisted by two springs71. (See Fig. 8.)

In order to make it possible for the three sets of cutting-tools to outat once, itis necessary that the lower knives should set back somewhatbehind the next upper set. This more accurately.

brings the tools out of a vertical line, which makes it necessary toraise the Wood on one end to incline it sufficiently to bring it underthe three knives in the same time. This is shown most plainly in Fig. 3.The inclination is, however, somewhat exaggerated.

is the support used to raise the wood, and 66 is a set-screw to adjustthe inclination That portion of support 65 against which the knives cutmay be of suitable soft material and is renewable.

The device to take up any wear in the central slot of frame 19 and onslide25, and also to keep the latter always closely fitting into theformer, consists in a slotted wedge 72, held in position on slide 25 bya set-screw 73. (See Figs. 2 and 4.) As the slot or the slide wears, theset-screw is loosened and the wedge advanced into the slot and tightenedagain.

I claim' I 1. In a tenoning-machine, the tool-reversing deviceconsisting in the combination of stock 22, handle 40, stops 42 42, stop43, and extension 61, for/the purpose described.

2. In a tenoning-machine, the tool-adj ustin g device consisting in thecombination of stock 22, handle 40, and collar 41, being held inposition on stock 22 by a set-screw, as described.

3. In a tenoning-machine, the tool reversing and adjusting deviceconsisting in the combination of stock 22, handle 40, a collar 41, beingheld in position on stock 22 by a setscrew, stops 42 42 on said collar,stop 43, and extension 61, hearing against the inclined ends of cut-outportion of collar 41, as and for the purpose explained.

4. In combination with a tenoning-machine, as described, thecutting-tool holder having suitable means to be connected to a machine,and two downward extensions 48 48, being provided with shoulders 49 49below the point of their junction, recesses 50 to receive the tongues 51of the cutting-tools, and a scale on each shoulder, .as and for thepurpose described.

5. In combination with a tenoning-machine, as described, thecutting-tool holder having suitable means to be connected to a machine,and two downward extensions 48 4S, united below and provided between thepoints of their junctions with series of shoulders 49 49, recesses 50 50below such shoulders, scales on such shoulders, an extension 74, andsprings 63, as and for the purpose explained.

6. In combination with aftenoning-machine, as described, the adjustabletreadle 23, having lugs 67 on its under side, in combination withhand-wheel 68 on rod 24.

7. In combination with a tenoning-machine, as described, thegaging-frame 54, consisting in the combination of stop 55, clamps 56 56,rod 59, sleeve 58, cam 57, and springs 71.

8. In a tenoning-machine, as described, the combination of thegaging-frame 54 with sup: port 65, bed-plate 18, and adj Listing-screw66, for the purpose specified.

9. In a tenoning-machine, as described, the

combination, with the sliding bed-plate 18, dovetailed at 32, of thecorrespondinglyshaped support 17 and washer 33, having bearing points 0060 (50, for the purpose specified.

10. In atenoning-machine, as described,the combination, with theadjustable frame 19 and slide 25, moving in a slot in the former, of theslotted wedge 72 and set-screw 73, as and for the purpose set forth.

11. In a tenoning-machine, the combination, as described, of astationary frame having a central slot and inclined flanges 35 35 toboth sides thereof, an adjustable frame moving on the stationaryframeand in guides thereon, a pin secured to the adjustable frame and passingthrough the central slot in the stationary frame, a washer extendingacross the central slot in said frame and resting against the inclinedflanges, and a nut engaging the pin after having passed through thewasher, as and for the purpose explained.

12. A tenoning-machine consisting of the following combination: astationary frame 16, having the rest 17, a sliding bed-plate 18,dovetailed below, and having a nut 28 for reception of shank 29, theadjustable frame 19, sliding on stationary frame 16 and held in positionthereon by a pin 39, Washer 37, and a nut 38, an adjustable andreversible stock 22, held up by a spring 26, an adjustable treadle, androd 24, by which the stock is operated, all as described.

13. In combination with a tenoning-machine, as described, thegaging-frame 54, having an adjustable stop sliding in a slot on saidframe, and a clamp wherebyit is attached to the wood, said clamp movingforward with the wood toward the cutter and acting as a stop to thefeeding operation, thereby gaging the length of the tenon, all as shownand described.

In testimony of which invention I hereunto set my hand.

LEWIS F. PARKS. -Witnesses:

CARL SPENGEL, FRANCIS M. BIDDLE.

